Bruno,

Thanks for clarifying this for the group. Please let Liz know that she was 
wrong in stating that physics was on a formal basis long ago...

Edgar



On Tuesday, January 14, 2014 5:01:51 AM UTC-5, Bruno Marchal wrote:
>
>
> On 14 Jan 2014, at 00:42, Edgar L. Owen wrote: 
>
> > Liz, 
> > 
> > Sigh.... Now we have several people complaining because I haven't   
> > offered a 'formal theory'. However not a single one of the   
> > complainers has themselves offered a formal theory even though they   
> > are continually offering theories of their own, none of which are   
> > formalized. Is that fair? 
> > 
> > The only person on this group who has a formal theory that I'm aware   
> > of is Bruno. No one else? You don't have one of your own but you are   
> > criticizing me because I don't have one? 
> > 
> > What you guys don't seem to understand is that whether a theory   
> > accurately describes reality or not is a much more important   
> > criterion than whether that theory is formalized or not. Physics   
> > described reality quite accurately for years before it reached its   
> > current degree of formalization and that's why it was accepted. 
>
> Physicists have not yet formal theory. Like all scientists they work   
> informally. 
>
>
>
> > 
> > Doesn't really matter whether you have a formal theory or not if   
> > there is no connection to reality now does there? Bruno's theory is   
> > apparently quite tightly formalized 
>
> The main reasoning is not formal (UDA), yet rigorous. "formalizing" in   
> logic, just mean "interviewing some machine", usually in case where   
> the machine is plausibly sound (like PA, ZF). 
>
>
>
>
> > but I see none of the required actual consistency with reality to   
> > indicate it actually applies to reality at all. 
> > 
> > Bruno's theory may itself be logically consistent, but I see no   
> > consistency with actual reality. 
>
> Nobody can see or prove consistency of a monist TOE (which include the   
> maker of the theory). 
>
> The question should be "do you see an inconsistency"? 
>
>
>
>
> > Mine on the other hand is entirely consistent with actual reality 
>
> Then you cannot belong as object of talk  in your theory, and your   
> theory cannot be fundamental (unless you explicitly make it dualist,   
> or "highly non computationalist). 
>
>
>
>
> > because it clearly states that the computations of its computational   
> > reality are precisely what is actually necessary to compute the real   
> > processes of nature, whatever they are. 
>
> terms like "necessay", "actually" "real" "processes", "nature" must be   
> defined. Anad as you do NOT use the satandard mathematical notion of   
> computation, you should (re)defined that term too. 
>
>
>
> > 
> > Bruno's on the other hand makes the wild and unsubstantiated   
> > assumption that all possible math is 'out there' in reality somehow   
> > even if it's doing nothing. 
>
> I do not that assumption. tegmark does it, but I have criticize it as   
> non sense many times on this list. 
>
> I assume only that "17 is prime" is independent of me and you. *All*   
> scientist assumes this. Even you assume this when mentioning for   
> example the quantum vacuum. If you can define it without assuming   
> arithmetical realism, then publish a paper, because that would be a   
> big discovery. 
>
>
>
>
>
>
>
> > A very improbable assumption there is no empirical evidence for   
> > whatsoever. 
>
> It is even inconsistent. But I do not assume it. 
>
>
>
> > Doesn't matter in the least if the logical consequences of that   
> > initial assumption are tight and valid (a formalized theory) if the   
> > assumption itself isn't. 
> > 
> > I just hope you guys understand what I'm saying is a basis of   
> > scientific method. 
>
>
> I doubt that this is the case. We still don't know you basic   
> assumptions. You don't have a theory, even an informal one. 
>
>
>
>
> > Doesn't matter so much if a theory is formalized. What matters is   
> > its explanatory power and consistency with actually observed   
> > phenomena. 
>
> It must make sense before. Non sensical theory have easily a lot of   
> explanatory power, but it eventually explains to much and appear   
> inconsistent. 
>
> Bruno 
>
>
>
> http://iridia.ulb.ac.be/~marchal/ 
>
>
>
>

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